Automatic engine stop



Sept 8, 1925.

G. C. BOOTON AUTOMATIC ENGINE STOP Filed Feb. 21. 1922 5 Sheets-Sheet l Sept 8, 1925.- 1,552,818

G. C. BOOTON AUTOMATIC ENGINE STOP Fi led Feb. 21, 1922 5 Sheets-Sheet 2 m I I 8 I M s;

Sept. 8, 1925.

G. c. BOOTON AUTOMATIC ENGINE S TGE Filed-Feb. 21. 1922 u s sheetg-she t s gwuen roz Sept 8. 1925. 1,552,818

G. C. BOOTON AUTOMATIC ENGINE STOP Filed Feb. 21. 1922, 5 sheets-sheet 4' @Cfiabfan Sept. 8, 1925. 1,552,818

G. C. BOOTON AUTOMATI C ENGINE STOP Filed Feb. 21. 1922 5 Sheets-Sheet 5 glwue/Moz GEE 00in; I

latsnted Sept. 8, 19255.

Burr res GEORGE C. BOQTON OF UNION BRIDGEZ-MARYIIAN D,"

auronnriciinemns'ror,

Application filed February 21, .-19 22.

State of Maryland, has invented certain new and useful Improvements iii-Automatic glue Stops, of which tllGfOllOWlllg-JS a spamfication.

Thisinvention relates-to a safety stop for. steam engines and aims primarilyto provide, means for automatically cutting oil, the sup,- plyo't steam to the engine. when the engine is subject to extra load or wherethereisa tendency for it to race.

The invention also contemplates the cut: ting oiliot' steam to the engine upon injury tothe governor, for instance, such as, the governor belt parting, as would! render the, latter inoperative.

il' further objectofmy invention is to automatically shut off the steam from the engineupon-droppedloadfor pull switch.

A still further object of: my invention is. to so construct the safety mechanism that it. may be automatically equipped or actuatedto cut, ofi the supply ofstea m to the engine without the necessity, ofroperatin'gthe throttle, valve, so that should the I throttle valve K be located in the vicinity of escaping steam orshould itbfe ome eXPanded due to heatso, as to be dithcultrto turn, the shutting off of the steam supply may be accomplished f without risk-on the part of the engineer.

Ancla still fur-thenobjectofmy invention. isto provide an automatic cutoiimechanisn of the type mentioned whiehmay be asse'm bled with any, ordinary steam engine and its: goveii nor without any material changein the construction ofthe governor.

Theiab'ove objects ofmy invention are ac: complished through the novel arrangement andiconstructio-n of parts, wherein I employ v an extra, reach ro d between the valve; operate ing lever and intake valve, which isbadapted. to be broken at a joint, adjacent one endof same, upon breakage of the governor belt, oven speeding, of the engine, or. upon drop. load or pullswitch, thus automatically, breaking the meansfor operatingthe intake} and" exhaust valves, thereby shutting, on. steam to the engine.

Theseand like objects of my invention will; be better: understood as thedescription. proceeds, and as specifically pointed out. in. the appended Claims,

Serial Neg-5383177.

Referring to the accompanying drawings, which fornia part of this specificatiomand which learly illustrate the construction of my, i11vention{- Figure 1 it side elevation of an engineprovided with myimprovement.

l i'gnre' 2. is a similar View with-a portion of the engine broken away and showing the valve operatingmechanism ofithe engine in an inoperative posi jon due toithe breaking, ofithe i governor belt;

Figure; 3 showsthetposition of anelectrio magnetic switch control when in a'running; position;

Figure 4:; shows a similar View of. the elec tricinagnetic switchcontrol when same has a drop load or pullswitch- Figure 5 is a similar view of the electric magnetic switch control when the governor belt has-broken.

Figure 61isa fragmentary detail View of the reach rod. connection with the electric magnetic switch.

EigureTis a: detail. side elevation of the reach rod breaker. in a :running position.

Figure 8. is azplan'view of same with a portionoit the reach rod sockets broken away to. better. illustrate invention. v

Eignre 9f=is ax side. elevation of the reach rod breaker: in a position, such as same wouldiassume. upon. breakage of the gov ernor' belt, over speeding. of the engine or a. pull iswitchv i l p Figure 10 a detailiside elevation of thevalve operating mechanism and my improved reach rodland reach rod breaker connectedlthereto, showing same in a running position.

Figure. 1.1 is a}. similar view showing; the valve. mechanism, reachrod andreach rod breaker, in aninopera-tive position.

Figu 12.;issa fragmentary detail view of the supporting. rod and belt roller for throwing, the valve mechanism, reach rod, reach rod breaker into an inoperativeiposition] for shutting off steam to thefengine when. the governor; belt; breaks.

Referring. to the. drawings in, detail, like numerals willbeused tov designate "like parts in the different views.

While, in thedrawingt,thereis shown a specifiedform of governonalthough of a \velljk'nownltype and arspecified 'valve controlling,mechanisin, it. willbe readily; understood that the" safety stop mechanism embodying the present invention may be assembled with any other similar form of governor and any other similar form of valve controlling mechanism.

Referring to the drawings in detail, the numeral 1 represents the engine, mounted on a base 2, and provided with intake and exhaust ports 3, rod plates 4, which are connected to the exhaust. and intake valve levers or connecting rods 5, all of which are of the usual construction and for which no claim is herein made.

The coreless governor of the usual revolvable type is represented at 6 as mounted upon shaft 7 and supported by the vertical standard 8. The governor is driven by a pulley 9 and a belt10 from the engine shaft in the usual manner. Attached to the vertical standard 8 in any suitable manner is an electric magnet 11, in the end of which a carrier armature rod 12 slides. A second carrier rod 13 is provided with a reduced end 14, which is adapted to slide in the hollow carrier rod 12 and is secured therein by means of a pin 15, which will be hereinafter further described. The carrier rod 13 is movably supported in a bracket 16 carried by the vertical standard 8. The lower end of the carrier rod 13 is bifurcated as at 17 and between the bifurcated ends 17 is journaled a. roller 18.

A supporting rod 19 is pivotally connected as at 20 to the vertical standard 8 by the bracket 21. Secured to the pulley shaft 22 is a bracket 23 to which is connected a rod 24. A plate 25 is securely mounted on one end of the rod 24 and has a cript rod 26 carried by the other end of the plate 25. The cript rod 26 bears in engagement with the supporting rod 19 adjacent the lower end of same. On the free end of the rod 24 is connected an arm 27, which is provided with a spindle 28 on which is mounted a roller 29 adapted to ride on the governor belt 10 as indicated in Fig. 1.

A valve operating lever 30 is pivoted as at 3]. to a bracket 32 carried by the vertical standard 8. Connected with the upper end of the valve operating lever 30 is the upper reach rod 33 which is connected with the steam inlet valve mechanism as at 34. a

The upper reach rod 33 is provided with a hinge 35 adjacent the end where same connects with the valve operating lever 30.

The lower end of the valve operating lever is connected with a lower reach rod 36, which is connected at the opposite end to a reach rod breaker designated as a Whole by the numeral 37, which in turn is connected to the vertical valve mechanism of one of the intake ports as shown at 38. The upper and lower reachrods are connected by the coupling rod 39. A coil spring is connected to the rod 39 adjacent the connection with the upper reach rod, and the opposite end of the spring is connected to the valve operating lever 30.

The supporting rod 19 has an arm 41 formed integral at a point above the pivot connection 20. The arm 41 is formed atrig'ht angle to the supporting rod and has pivotally connected as at 42 a link 43, to the free end of which the pin 15 is pivotally connected.

An extra reach rod 44 is connected at one end to the reach rod breaker 37 and the opposite end of-the extra reach rod is provided with an enlarged head 45 which passes through the bifurcated end 17 of the carrier rod 13 and rests on and in engagement with the roller 18 that is j ournaled in the bifurcated end 17.

The reach rod breaker 37 comprises socket members 46, 47 and 48. Each of the socket members isprovided with screw threads so that adjustment of the reach rod 36, the extra reach rod 44, and the short valve mechanism rod 49 can be made. The lower reach rod 36 screws into the screw threaded socket 46, while the extra reach rod 44 is screw threaded in the socket 47. The socket members 46 and 48 are hingedly connected at 50. The upper surface of the socket member 46 is provided with apair of lifts 5151 to which is pivotally supported by the pivot 52, a link comprising arms 5353 which depend downwardly on each side of the member 46, and a roller 54 is journaled between the free ends of the arms 53 beneath the member 46, as illustrated in Fig. 7.

A downwardly suspending arm 55 is formed integral with the member 46, and has a roller 56 mounted on a spindle 57 carried by the end of the arm 55. The socket member 48 has a connecting arm or rod 58 pivotally connected as at 59 to the underside of same. The free end of the arm or rod 58 is provided with a roller engaging recess 60, so that when the engine is in a running position the arm or rod 58 lies in a parallel line with the socket members 46 and 48, and the roller engaging recess 60 of the arm 58 rests on the roller 54 that is positioned between the free end of the downwardly suspending arms 53-53.

The socket member 47 is pivotally con nected to one of the downwardly suspending arms 53 and when the engine is running the member 47 lies in approximately a parallel line with the socket member 46. The socket member 47 is approximately of L- shaped formation, and the part 61, which is at right angle to the socket 47 is provided with a curved end 62 which bears against the roller 56 and which acts as a trip to uncouple the members 46 and 48 from the position shown in Fig. 7 upon breakage of the governor belt, over-speeding or pulled switch.

of the engine 1 IVhile, as before stated, the mechanism embodying the present invention may be assembled with any ordinary valve control ling mec-hanisin and while no olaim'is made for in the drawing, it is thought that abr'ief description as to the operation and con struction of same will give a better understanding to the operatibn and construe:- tion of my automatic engine stop therefore, the valve controlling mechanism shown-in the aooon'rpanying. drawings as'olear'ly illustrated in Figs. 10 and 11 include an arm 38, to which is connected a rod 49 which is connected to the reach rod breaker 37, which in turn is connected to one end of the valve operating lever 30. At this point it will be understood that the rocking movement imparted to the lever will result in corresponding movement of the arm 38. The arm 38 is formed or provided With a cam 63 which is of course movable therewith. An arm 6a is mounted upon the shaft 65, upon which the arm 38 is also mounted, and is arranged to move the steam valve to cut off or emit steam to the engine cylinders.

The bracket 16 mounted on the vertical standard 8 is provided with a shoulder 16, against which the bifurcated end 17 of the lower carrier rod 13 bears and prevents rotation of the carrier rods 12 and 13 while the engine is in a running position, or when the carrier rods are in the in Fig. 3.

As hereinbcfore stated, the object of my invention is to automatically stop an engine upon breakage of the governor belt, over speeding of the engine, drop load or pulled switch, and in case of breaking of the governor belt, the following operation takes place. When the governor belt breaks, the roller 29 journals-d on the end of the arm 2? drops downwardly and assumes the position shown in Fig. 2, and on the clownward travel of the roller and arm, the trip arm 26 presses firmly against the lower end of the supporting rod 19, which causes same to swing on the pivot 20, thus moving the pivoted arm 43 outwardly from the vertical standard and at the same time withdrawing the pin 15 from the alined opening in the carrier rods 12 and 13. When the pin 15 has been entirely withdrawn, the carrier rod 13 falls to the position shown in Fig. 5, and the dropping of the carrier rod 13 permits dropping of the extra reach rod 44, and during the dropping of the reach rod 4 1, the curved end 62 of the trip 61 presses against the roller 56, which causes the roller that is positioned between the downwardly suspending arms 53-53 to move out of engagement with the recess formed in the end of the pivoted arm 58, after which the socket members 46 and 18 position shown the valve c'ontrolling mechanism shownswing on the and at the-time pivot-50; as shown inFiv. 9"

takes place,

are o erands the spring 40 pulling on the. coupling-rod 39 causes thenpper resale rod 38 to break the hinge 35,- thus inaking the reach rods 38 and 36 inoperative and shutting off steam to the engine cylinder.

In ease of overspeed of the engine;

load or pulled switch, the electric magnet ll lose's its attracting force'sywliich allows the carrier rods 12 to the position and 13 drop downward shownin Fig. 4, at which time, the extra reach rod 44 also drops down and the same 013 mg the reach rods 33 and 36 described above belt breaking.

While I have preferred form era-tion takes place for makinoperative as in the case of the governor shown and described the of my invention, I realize that various minor changes may be resorted to, without dep arting from the spirit and scope of the invention aS claimed; therefore,

I do not Wish to limit myself to the exact de tails of construction shown, nor to the combination and arrangement of parts.

What I claim as new and desire to protect by Letters Patent is 1. An automatic engine stop, comprising a pair of carrier rods adapted to be connected together,

nected with intake a pair of reach rods convalves, an extra reach rod and means for causing the reach rods to assume an inoperative position through the extra reach rod ernor belt.

upon breakage of the gov- 2. In an automatic engine stop, a pair of carrier rods adapted to gether, a valve adapted to be connected be connected tolever, reach rods with opposite ends rocking of the valve rocking lever and the intake valves of the engine,

the reach rods means for connecting and means for causing the reach rods to assume an inoperative position upon breakage belt.

or parting of the governor 3. In an automatic engine stop, a ball governor, a governor belt, a pair of carrier rods supported on a rocking lever supported by standard, reach posite ends of governor standard, a valve the governor rods connected with the opthe rocking lever and valve intake ports mechanism, a reach rod breaker positioned betw and the valve op een one of the reach rods erating mechanism, an extra reach rod connected with the reach rod breaker and the carrier rod and means suption upon break 4. In an automatic engine age of the governor belt.

stop, a ball governor, a governor supporting standard, a governor belt, an intake valve mechanism,

a rocking lever standard, reach supported by the governor rods connected with the valve rocking lever at one end and with the valve mechanism at the opposite end, a reach rod breaker positioned between the end of the lower reach rod and the valve mechanism, means for causing the reach rod breaker to break on parting of the governor belt and throwing the lower reach rod into an inoperative position and means for con necting the lower reach rod with the upper reach rod for moving the upper reach rod into an inoperative position upon breakage of the reach rod breaker in the lower reach rod.

5. In an automatic engine stop, a governor asupporting governor standard, a governor belt, a supporting arm pivotally connected to the governor standard, a trip roller adapted to ride on the governor belt, a valve operating lever pivotally connected to the governor standard, reach rods connected with the valve lever and the valve mechanism of the intake port and the reach rods adapted to be moved into an inoperatiiie position upon breakage of the governor be t.

In testimony whereof I afliX my signature.

GEORGE G BOOTON. 

